HI Guys,
I have a question regarding a summing amp that I am about to build.
I am posting the schematics and a picture of the original card.
could you help me sourcing this inductors and from what type it is exactly ?
We talk about L9 and L10 here.
the value is 15 uH.
thanks a lot !! 🙂🙂🙂
P
I have a question regarding a summing amp that I am about to build.
I am posting the schematics and a picture of the original card.
could you help me sourcing this inductors and from what type it is exactly ?
We talk about L9 and L10 here.
the value is 15 uH.
thanks a lot !! 🙂🙂🙂
P
Attachments
They look vaguely similar to the TDK / Epcos (formerly Siemens) B82141A1154J or B82145A1154J or B78108S1154J.
B82141A1154J000 TDK Electronics Inc. | Inductors, Coils, Chokes | DigiKey
B82145A1154J000 EPCOS / TDK | Mouser Europe
Then again, there are more companies making colour-coded axial inductors. As long as they have the right value and about the right size, they will probably all work well.
B82141A1154J000 TDK Electronics Inc. | Inductors, Coils, Chokes | DigiKey
B82145A1154J000 EPCOS / TDK | Mouser Europe
Then again, there are more companies making colour-coded axial inductors. As long as they have the right value and about the right size, they will probably all work well.
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Inductance sortie axiale 15 mH 2.8 Ω 145 mA LGA0307-15 1 pcs. |
Conrad.fr
Oubien,
https://fr.farnell.com/sigmainductors-te-connectivity/sc30150kt/inductance-15uh-axiale/dp/1173903
😉 Mona
Conrad.fr
Oubien,
https://fr.farnell.com/sigmainductors-te-connectivity/sc30150kt/inductance-15uh-axiale/dp/1173903
😉 Mona
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Please forget post #2, as the ones I found all have a ten times too large inductance. Besides, they have 5 % tolerance, while the photo shows a silver tolerance band.
thanks for all your great infos !
silver is 10% precision right ?
could different brand affect the sound in a huge way ?
I am adding an other older version where they use as well inductors... seems to. use the same brand (maybe I am mistaken) (and where they use MAT02)
do I need to be careful. about something ? except the size and tolerance of course.
is there different "type " or technologies ?
thanks very much !
P
silver is 10% precision right ?
could different brand affect the sound in a huge way ?
I am adding an other older version where they use as well inductors... seems to. use the same brand (maybe I am mistaken) (and where they use MAT02)
do I need to be careful. about something ? except the size and tolerance of course.
is there different "type " or technologies ?
thanks very much !
P
Attachments
This one looks similar to the original, Epcos B78108S1153K000:
https://uk.farnell.com/epcos/b78108s1153k000/inductor-15uh-10-610ma-20mhz/dp/608506
Silver indeed means 10 % tolerance. Similar inductors with a smaller tolerance should, of course, also work.
The inductors should not be driven anywhere near saturation by the signal currents, their parasitic capacitance should not be so large that it destabilizes the amplifier and their losses should be small compared to those of R279 and R289. I expect that just about any 15 uH axial inductor of about the right size will meet these criteria.
https://uk.farnell.com/epcos/b78108s1153k000/inductor-15uh-10-610ma-20mhz/dp/608506
Silver indeed means 10 % tolerance. Similar inductors with a smaller tolerance should, of course, also work.
The inductors should not be driven anywhere near saturation by the signal currents, their parasitic capacitance should not be so large that it destabilizes the amplifier and their losses should be small compared to those of R279 and R289. I expect that just about any 15 uH axial inductor of about the right size will meet these criteria.
could this one be a choice ? (would like to order from mouser)
78F150J-RC Bourns | Mouser France
thanks !
P
78F150J-RC Bourns | Mouser France
thanks !
P